Synonyms & related words for noxious

Find synonyms, related words, and the definition of noxious — including noisome, harmful, poisonous, deleterious, pernicious, pestilent. Dendril is a free visual thesaurus that shows them on an interactive map where stronger matches sit closer to the center — no signup, no ads.

Words related to noxious

Explore words related to noxious — words associated with it, words that go with it, and its nearest matches in meaning. Related words include noxiousness, noxiously, noisomeness, unharmful, toxically, nocuous, autotoxin, venomousness. Click any word to make it the center of the map and keep exploring the web of connections.

Synonyms for noxious

Common synonyms for noxious include noisome, harmful, poisonous, deleterious, pernicious, pestilent, toxic, injurious — words that share a close meaning. Hover or tap any word on the map for its definition and part of speech.

Where does noxious come from?

The word noxious breaks down into one root of Latin origin: the root nox-, from Latin noxa (“harm, injury”). Explore each root to see other English words built from the same source.